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DocuSign Envelope ID:5FA4B1AC-B897-4C32-A1E4-4B4A8885A341 <br /> AP=r <br /> rR17WD r? CrowderGuIf <br /> SULF RFP for Disaster DebrisClearance and Removal Services <br /> Orange County, INC <br /> ■ Climbing ropes shall have a minimum diameter of 1/2 in(1.2 cm)and be constructed of a synthetic fiber,with <br /> a minimum nominal breaking strength of 5400 lb (2439.4 kg) when new. Maximum working elongation <br /> (elasticity)shall not exceed 7%at a load of 540 lb(244.9 kg)(10%maximum breaking strength). <br /> ■ Polypropylene or other synthetic ropes having similar low melting points shall not be used as climbing ropes, <br /> A tree worker shall be tied in with an approved type of climbing rope and safety saddle when working-above the ground: <br /> this does not necessarily apply to a worker ascending into a tree; work may be performed while standing on a self- <br /> supporting ladder but only when the worker is tied in as required. During climbing operations, tree limbs should be <br /> inspected before weight is applied to them, <br /> A 5/8 in (1.5 cm) metal shackle shall be secured to the end of a support line that meets minimum standards for a <br /> climbing line. The support line shall be tied to the pin of the shackle with the climbing line placed through the shackle. <br /> The support line shall be tied off at the base of the tree or any other acceptable anchor. The climbing line shall be <br /> crotched as soon as practicable after the employee is aloft,and a taut-line hitch tied and checked. The worker shall <br /> be completely secured with the climbing line before starting the operation.The worker shall remain tied in until the work <br /> is completed and he/she has returned to the ground. If it is necessary to re-crotch the rope in the tree,the worker shall <br /> retie in or use the safety strap before releasing the previous tie. Tree workers shall not carry tools in their hands while <br /> climbing. Tools shall be raised and lowered one at a time by means of a line, except when working from an aerial-lift <br /> device or during topping or removing operations. a <br /> FELLING <br /> Prior to felling operations,the employee shall consider: <br /> ■ The tree and the surrounding area for anything that may cause trouble when the tree falls. <br /> ■ The shape of the tree,the lean of the tree,and decayed or weak spots. <br /> ■ Wind force and direction. <br /> ■ The location of other people. <br /> ■ Electrical hazards. <br /> Prior to felling operations, the work area shall be cleared to permit safe working conditions and an escape route shall <br /> be planned. Each worker shall be instructed as to exactly what he/she will do. All workers not directly involved in the <br /> operation shall be kept clear of the work area. <br /> Before starting to cut,the operator shall be sure of his/her footing and must clear away brush,fallen trees, and other <br /> materials that might interfere with cutting operations. A notch and back cut shall be used in felling trees over 5 in(12.7 <br /> cm)in diameter{measured at breast height]. No tree shall be felled by"slicing"or'ripping"cuts. <br /> ■ The depth or penetration of the notch shall be about one third the diameter of the tree. <br /> ■ The opening or height of the notch shall be about 2.5 in (6.3 cm)for each 1 ft(0.3 m)of the tree's <br /> diameter. <br /> ■ The back cut shall be made higher(approximately 2 in(5 cm))than the base of the notch to prevent <br /> kickback. <br /> The employee shall work from the uphill side whenever possible. Just before the tree or limb is ready to fall,an audible <br /> warning shall be given to all those in the area. All persons shall be safely out of range when the tree falls. If there is <br /> danger that the trees being felled may fall in the wrong direction or damage property,wedges, block and tackle, rope, <br /> or wire cable(except when an electrical hazard exists)shall be used. All limbs shall be removed from trees to a height <br /> and width sufficient to allow the tree to fall clear of any wires and other objects in the vicinity. <br /> Special precautions shall be taken when roping rotten or split trees due to the potential for failing in an unexpected <br /> direction even though the cut is made on the proper side. Persons shall be kept back from the butt of a tree that is <br /> starting to fall, <br /> BRUSH REMOVAL AND GRINDING CHIPPING <br /> Brush and logs shall not be allowed to create a hazard at the work site. Employees working with a brush chipper shall <br /> be trained in its safe operation.The chipper shall be operated in accordance with the manufacturer's recommendations. <br /> 30 <br />